JP5070050B2 - Tryptophan derivatives and uses thereof - Google Patents

Tryptophan derivatives and uses thereof Download PDF

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JP5070050B2
JP5070050B2 JP2007525925A JP2007525925A JP5070050B2 JP 5070050 B2 JP5070050 B2 JP 5070050B2 JP 2007525925 A JP2007525925 A JP 2007525925A JP 2007525925 A JP2007525925 A JP 2007525925A JP 5070050 B2 JP5070050 B2 JP 5070050B2
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正徳 染井
淳彦 服部
信雄 鈴木
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正徳 染井
淳彦 服部
信雄 鈴木
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Description

本発明は、トリプトファン誘導体及びその用途、特に骨粗鬆症治療薬、骨芽細胞活性化剤に関する。   The present invention relates to tryptophan derivatives and uses thereof, in particular, osteoporosis therapeutic agents and osteoblast activators.

骨粗鬆症は骨の形成を担う骨芽細胞と骨の吸収を司る破骨細胞の働きのバランスが崩れて発症する。骨芽細胞を活性化させる化合物及び破骨細胞を抑制する化合物は骨組鬆症の治療に有効であると考えられる。エストロゲンは、骨芽細胞を活性化させ、破骨細胞を抑制すると考えられ骨組鬆症の治療に用いられているが、骨以外の細胞、特に生殖器官に対する作用を併せもつため、子宮癌、乳癌の危険性が増加する等の副作用が懸念されており、また、厚生労働省は、2004年1月29日付で、エストロゲンを長期間服用すると、乳癌や痴呆症の発症を高める可能性があるとして、注意を呼びかける安全性情報を発している。更に、エストロゲンは、分子構造が複雑であるため、合成は煩雑かつ困難である。   Osteoporosis develops when the balance between osteoblasts responsible for bone formation and osteoclasts responsible for bone resorption is lost. Compounds that activate osteoblasts and compounds that suppress osteoclasts are considered effective for the treatment of osteoporosis. Estrogens activate osteoblasts and suppress osteoclasts and are used to treat osteoporosis. However, estrogens also have effects on cells other than bone, especially the reproductive organs, so uterine cancer, breast cancer There are concerns about side effects such as an increased risk, and the Ministry of Health, Labor and Welfare, dated January 29, 2004, may increase the onset of breast cancer and dementia if estrogen is taken for a long time. Safety information that calls attention is issued. Furthermore, since estrogen has a complicated molecular structure, synthesis is complicated and difficult.

インドール骨格を有するメラトニン(N−アセチル−5−メトキシトリプタミン)は骨芽細胞及び破骨細胞の両者に対して抑制的に作用することが報告されている(非特許文献1)が、トリプトファン誘導体と骨芽細胞及び破骨細胞に対する作用との関係については何ら報告されていない。
N. Suzuki, and A. Hattori, J. Pineal Res., 33, 253-258 (2002)
It has been reported that melatonin (N-acetyl-5-methoxytryptamine) having an indole skeleton inhibits both osteoblasts and osteoclasts (Non-patent Document 1). There is no report about the relationship with the action on osteoblasts and osteoclasts.
N. Suzuki, and A. Hattori, J. Pineal Res., 33, 253-258 (2002)

本発明は、医薬として有用なトリプトファン誘導体、特に骨芽細胞を活性化させるトリプトファン誘導体及びこれを用いた骨粗鬆症治療薬、骨芽細胞活性化剤を提供することを目的とする。   An object of the present invention is to provide a tryptophan derivative useful as a medicine, particularly a tryptophan derivative that activates osteoblasts, a therapeutic agent for osteoporosis using the same, and an osteoblast activator.

本発明は、以下の発明を包含する。   The present invention includes the following inventions.

(1)次式(I):

Figure 0005070050
(1) The following formula (I):
Figure 0005070050

(式中、Xはハロゲン原子を表し;Rは水素原子、置換又は非置換のC1−6−アルキル基、置換又は非置換のC2−6−アルケニル基、置換又は非置換のC2−6−アルキニル基、置換又は非置換の芳香族基、置換又は非置換のアラルキル基、置換又は非置換のアシル基、置換又は非置換のアリールスルホニル基、置換又は非置換のC1−6−アルキルスルホニル基、置換又は非置換のC2−7−アルコキシカルボニル基、又は水酸基を表し;Rは置換又は非置換のC1−21−アルキル基を表し;R、R及びRは、同一又は異なり、水素原子又はハロゲン原子を表し;Rは水素原子、又は置換又は非置換のC1−6−アルキル基を表し;Rは水素原子、又は、置換又は非置換のC1−21−炭化水素基を表す。)
で示される化合物又はその塩。
Wherein X represents a halogen atom; R 1 represents a hydrogen atom, a substituted or unsubstituted C 1-6 -alkyl group, a substituted or unsubstituted C 2-6 -alkenyl group, a substituted or unsubstituted C 2 -6 -Alkynyl group, substituted or unsubstituted aromatic group, substituted or unsubstituted aralkyl group, substituted or unsubstituted acyl group, substituted or unsubstituted arylsulfonyl group, substituted or unsubstituted C 1-6- Represents an alkylsulfonyl group, a substituted or unsubstituted C 2-7 -alkoxycarbonyl group, or a hydroxyl group; R 2 represents a substituted or unsubstituted C 1-21 -alkyl group; R 3 , R 5, and R 6 represent Are the same or different and each represents a hydrogen atom or a halogen atom; R 4 represents a hydrogen atom or a substituted or unsubstituted C 1-6 -alkyl group; R 7 represents a hydrogen atom or a substituted or unsubstituted C 1. -21 - a hydrocarbon group It is.)
Or a salt thereof.

(2)前記(1)に記載の式(I)において、Xが臭素原子、Rが水素原子、置換又は非置換のC1−6−アルキル基、置換又は非置換のC2−6−アルケニル基、置換又は非置換のC2−6−アルキニル基、置換又は非置換の芳香族基、置換又は非置換のアラルキル基、置換又は非置換のアシル基、置換又は非置換のアリールスルホニル基、置換又は非置換のC1−6−アルキルスルホニル基、又は置換又は非置換のC2−7−アルコキシカルボニル基、Rがメチル基、R、R及びRが、同一又は異なり、水素原子又は臭素原子、Rがメチル基、RがC1−6−アルキル基である化合物又はその塩。(2) In the formula (I) described in (1), X is a bromine atom, R 1 is a hydrogen atom, a substituted or unsubstituted C 1-6 -alkyl group, a substituted or unsubstituted C 2-6-. An alkenyl group, a substituted or unsubstituted C 2-6 -alkynyl group, a substituted or unsubstituted aromatic group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted acyl group, a substituted or unsubstituted arylsulfonyl group, A substituted or unsubstituted C 1-6 -alkylsulfonyl group, or a substituted or unsubstituted C 2-7 -alkoxycarbonyl group, R 2 is a methyl group, R 3 , R 5 and R 6 are the same or different and hydrogen A compound or a salt thereof, wherein the atom or bromine atom, R 4 is a methyl group, and R 7 is a C 1-6 -alkyl group.

(3)前記(1)又は(2)に記載の化合物又はその薬学的に許容される塩を有効成分として含有する医薬組成物。 (3) A pharmaceutical composition comprising the compound according to (1) or (2) above or a pharmaceutically acceptable salt thereof as an active ingredient.

(4)前記(1)又は(2)に記載の化合物又はその薬学的に許容される塩を有効成分として含有する骨粗鬆症治療薬。 (4) A therapeutic agent for osteoporosis comprising the compound according to (1) or (2) or a pharmaceutically acceptable salt thereof as an active ingredient.

(5)前記(1)又は(2)に記載の化合物又はその塩を含有する骨芽細胞活性化剤。 (5) An osteoblast activator containing the compound or salt thereof according to (1) or (2).

本発明によれば、骨芽細胞を活性化させるトリプトファン誘導体及びこれを用いた骨粗鬆症治療薬、骨芽細胞活性化剤を提供することができる。また、本発明のトリプトファン誘導体は、エストロゲンよりも容易に合成でき、大量生産が可能である。   ADVANTAGE OF THE INVENTION According to this invention, the tryptophan derivative which activates an osteoblast, the osteoporosis therapeutic agent and osteoblast activation agent using the same can be provided. Further, the tryptophan derivative of the present invention can be synthesized more easily than estrogen and can be mass-produced.

以下、本発明を詳細に説明する。   Hereinafter, the present invention will be described in detail.

本発明において、C1−6−アルキル基、及び各置換基中の「C1−6−アルキル基」としては、例えばメチル基、エチル基、プロピル基、イソプロピル基、ブチル基、イソブチル基、sec−ブチル基、tert−ブチル基、ペンチル基、イソペンチル基、ヘキシル基、シクロプロピル基、シクロブチル基、シクロペンチル基、シクロヘキシル基が挙げられる。In the present invention, examples of the C 1-6 -alkyl group and the “C 1-6 -alkyl group” in each substituent include a methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, sec -Butyl group, tert-butyl group, pentyl group, isopentyl group, hexyl group, cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group can be mentioned.

1−21−アルキル基としては、例えばメチル基、エチル基、プロピル基、イソプロピル基、ブチル基、イソブチル基、sec−ブチル基、tert−ブチル基、ペンチル基、イソペンチル基、ヘキシル基、ヘプチル基、オクチル基、ノニル基、デシル基、ウンデシル基、ドデシル基、トリデシル基、テトラデシル基、ペンタデシル基、ヘキサデシル基、ヘプタデシル基、オクタデシル基、ノナデシル基、イコシル基、ヘンイコシル基、シクロプロピル基、シクロブチル基、シクロペンチル基、シクロヘキシル基が挙げられる。Examples of the C 1-21 -alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a sec-butyl group, a tert-butyl group, a pentyl group, an isopentyl group, a hexyl group, and a heptyl group. Octyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group, nonadecyl group, icosyl group, heicosyl group, cyclopropyl group, cyclobutyl group, A cyclopentyl group and a cyclohexyl group are mentioned.

前記式(I)においてRで表されるC1−21−アルキル基としては、C1−6−アルキル基が好ましく、メチル基が更に好ましい。In the formula (I), the C 1-21 -alkyl group represented by R 2 is preferably a C 1-6 -alkyl group, and more preferably a methyl group.

2−6−アルケニル基としては、例えばビニル基、1−プロペニル基、アリル基、1−ブテニル基、2−ブテニル基、ペンテニル基、ヘキセニル基が挙げられる。Examples of the C 2-6 -alkenyl group include a vinyl group, 1-propenyl group, allyl group, 1-butenyl group, 2-butenyl group, pentenyl group, and hexenyl group.

2−6−アルキニル基としては、例えばエチニル基、1−プロピニル基、2−プロピニル(プロパルギル)基、3−ブチニル基、ペンチニル基、ヘキシニル基が挙げられる。Examples of the C 2-6 -alkynyl group include ethynyl group, 1-propynyl group, 2-propynyl (propargyl) group, 3-butynyl group, pentynyl group, and hexynyl group.

芳香族基としては、例えばフェニル基、トリル基、ナフチル基等の芳香族炭化水素基;フリル基、チエニル基、ピロリル基、オキサゾリル基、イソオキサゾリル基、チアゾリル基、イソチアゾリル基、イミダゾリル基、ピラゾリル基、ピリジル基、ピリミジニル基、ピリダジニル基、ピラジニル基、キノリル基、イソキノリル基等の芳香族複素環基が挙げられる。   Examples of aromatic groups include aromatic hydrocarbon groups such as phenyl, tolyl, and naphthyl groups; furyl, thienyl, pyrrolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, imidazolyl, pyrazolyl, Examples include an aromatic heterocyclic group such as a pyridyl group, a pyrimidinyl group, a pyridazinyl group, a pyrazinyl group, a quinolyl group, and an isoquinolyl group.

アラルキル基としては、例えばベンジル基、フェネチル基が挙げられる。   Examples of the aralkyl group include a benzyl group and a phenethyl group.

1−21−炭化水素基としては、例えば、メチル基、エチル基、プロピル基、イソプロピル基、ブチル基、イソブチル基、sec−ブチル基、tert−ブチル基、ペンチル基、イソペンチル基、ヘキシル基、ヘプチル基、オクチル基、ノニル基、デシル基、ウンデシル基、ドデシル基、トリデシル基、テトラデシル基、ペンタデシル基、ヘキサデシル基、ヘプタデシル基、オクタデシル基、ノナデシル基、イコシル基、ヘンイコシル基等の直鎖状又は分岐状のC1−21−アルキル基;シクロプロピル基、シクロブチル基、シクロペンチル基、シクロヘキシル基、シクロヘプチル基等のC3−21−シクロアルキル基;ビニル基、1−プロペニル基、アリル基、1−ブテニル基、2−ブテニル基、ペンテニル基、ヘキセニル基、オレイル基等のC2−21−アルケニル基;エチニル基、1−プロピニル基、2−プロピニル(プロパルギル)基、3−ブチニル基、ペンチニル基、ヘキシニル基等のC2−21−アルキニル基;フェニル基、トリル基、ナフチル基等の芳香族炭化水素基;ベンジル基、フェネチル基等のアラルキル基;アダマンチル基等の橋かけ環炭化水素基;スピロ環炭化水素基;縮合環炭化水素基が挙げられる。As the C 1-21 -hydrocarbon group, for example, methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, sec-butyl group, tert-butyl group, pentyl group, isopentyl group, hexyl group, Linear or heptyl group, octyl group, nonyl group, decyl group, undecyl group, dodecyl group, tridecyl group, tetradecyl group, pentadecyl group, hexadecyl group, heptadecyl group, octadecyl group, nonadecyl group, icosyl group, heicosyl group, etc. Branched C 1-21 -alkyl group; C 3-21 -cycloalkyl group such as cyclopropyl group, cyclobutyl group, cyclopentyl group, cyclohexyl group, cycloheptyl group; vinyl group, 1-propenyl group, allyl group, 1 -Butenyl, 2-butenyl, pentenyl, hexenyl, ole C, such as Le group 2-21 - alkenyl; ethynyl, 1-propynyl, 2-propynyl (propargyl) group, 3-butynyl group, pentynyl group, C 2-21 such hexynyl group - alkynyl; a phenyl group And aromatic hydrocarbon groups such as tolyl group and naphthyl group; aralkyl groups such as benzyl group and phenethyl group; bridged ring hydrocarbon groups such as adamantyl group; spiro ring hydrocarbon group; and condensed ring hydrocarbon groups.

アシル基としては、例えばホルミル基、アセチル基、プロピオニル基(プロパノイル基)、ブチリル基(ブタノイル基)、バレリル基(ペンタノイル基)、ヘキサノイル基等のC1−6−脂肪族アシル基;ベンゾイル基、トルオイル基等の芳香族アシル基(アロイル基)が挙げられる。Examples of the acyl group include a C 1-6 -aliphatic acyl group such as a formyl group, an acetyl group, a propionyl group (propanoyl group), a butyryl group (butanoyl group), a valeryl group (pentanoyl group), and a hexanoyl group; An aromatic acyl group (aroyl group) such as a toluoyl group can be mentioned.

アリールスルホニル基としては、例えばフェニルスルホニル基(ベンゼンスルホニル基)、p−トルエンスルホニル(トシル)基、ナフタレンスルホニル基等の芳香族炭化水素−スルホニル基;フランスルホニル基、チオフェンスルホニル基、ピロールスルホニル基、オキサゾールスルホニル基、イソオキサゾールスルホニル基、チアゾールスルホニル基、イソチアゾールスルホニル基、イミダゾールスルホニル基、ピラゾールスルホニル基、ピリジンスルホニル基、ピリミジンスルホニル基、ピリダジンスルホニル基、ピラジンスルホニル基、キノリンスルホニル基、イソキノリンスルホニル基等の芳香族複素環−スルホニル基が挙げられる。   Examples of the arylsulfonyl group include an aromatic hydrocarbon-sulfonyl group such as a phenylsulfonyl group (benzenesulfonyl group), a p-toluenesulfonyl (tosyl) group, and a naphthalenesulfonyl group; a furansulfonyl group, a thiophenesulfonyl group, a pyrrolesulfonyl group, Oxazolesulfonyl group, isoxazolesulfonyl group, thiazolesulfonyl group, isothiazolesulfonyl group, imidazolesulfonyl group, pyrazolesulfonyl group, pyridinesulfonyl group, pyrimidinesulfonyl group, pyridazinesulfonyl group, pyrazinesulfonyl group, quinolinesulfonyl group, isoquinolinesulfonyl group, etc. An aromatic heterocyclic-sulfonyl group.

1−6−アルキルスルホニル基としては、例えばメタンスルホニル(メシル)基、エタンスルホニル基が挙げられる。Examples of the C 1-6 -alkylsulfonyl group include a methanesulfonyl (mesyl) group and an ethanesulfonyl group.

2−7−アルコキシカルボニル基とは、C1−6−アルコキシ基で置換されたカルボニル基をいい、例えばメトキシカルボニル基、エトキシカルボニル基、プロポキシカルボニル基、tert−ブトキシカルボニル基が挙げられる。The C 2-7 -alkoxycarbonyl group means a carbonyl group substituted with a C 1-6 -alkoxy group, and examples thereof include a methoxycarbonyl group, an ethoxycarbonyl group, a propoxycarbonyl group, and a tert-butoxycarbonyl group.

ハロゲン原子としては、例えばフッ素原子、塩素原子、臭素原子、ヨウ素原子が挙げられる。   Examples of the halogen atom include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.

前記式(I)においてR、R又はRで表されるC1−6−アルキル基及びC1−21−アルキル基、Rで表されるC2−6−アルケニル基、C2−6−アルキニル基、C1−6−アルキルスルホニル基及びC2−7−アルコキシカルボニル基並びにRで表されるC1−21−炭化水素基は、芳香族基、アシル基、水酸基、カルボキシ基、ハロゲン原子、C1−6−アルコキシ基(例えばメトキシ基、エトキシ基、プロポキシ基)等から選ばれる1以上の置換基で置換されていてもよい。In the formula (I), a C 1-6 -alkyl group and a C 1-21 -alkyl group represented by R 1 , R 2 or R 4 , a C 2-6 -alkenyl group represented by R 1 , C 2 A C 1-21 -hydrocarbon group represented by a -6 -alkynyl group, a C 1-6 -alkylsulfonyl group, a C 2-7 -alkoxycarbonyl group, and R 7 is an aromatic group, an acyl group, a hydroxyl group, carboxy It may be substituted with one or more substituents selected from a group, a halogen atom, a C 1-6 -alkoxy group (for example, methoxy group, ethoxy group, propoxy group) and the like.

前記式(I)においてRで表される芳香族基、アラルキル基、アシル基及びアリールスルホニル基は、C1−6−アルキル基、C2−6−アルケニル基、C2−6−アルキニル基、芳香族基、アシル基、水酸基、カルボキシ基、ハロゲン原子、C1−6−アルコキシ基(例えばメトキシ基、エトキシ基、プロポキシ基)等から選ばれる1以上の置換基で置換されていてもよい。In the formula (I), the aromatic group, aralkyl group, acyl group and arylsulfonyl group represented by R 1 are a C 1-6 -alkyl group, a C 2-6 -alkenyl group, a C 2-6 -alkynyl group. , An aromatic group, an acyl group, a hydroxyl group, a carboxy group, a halogen atom, a C 1-6 -alkoxy group (for example, a methoxy group, an ethoxy group, a propoxy group) and the like, may be substituted. .

前記式(I)で示される化合物の塩としては、薬学的に許容される塩が好ましく、例えば、塩酸、硫酸、リン酸、臭化水素酸、ヨウ化水素酸、硝酸、ピロ硫酸、メタリン酸等の無機酸、又はクエン酸、安息香酸、酢酸、プロピオン酸、フマル酸、マレイン酸、スルホン酸(例えば、メタンスルホン酸、p−トルエンスルホン酸、ナフタレンスルホン酸)等の有機酸との塩が挙げられる。また、フェノール性水酸基又はカルボキシル基を有する場合には、ナトリウム塩、カリウム塩等のアルカリ金属塩として用いることもできる。   The salt of the compound represented by the formula (I) is preferably a pharmaceutically acceptable salt. For example, hydrochloric acid, sulfuric acid, phosphoric acid, hydrobromic acid, hydroiodic acid, nitric acid, pyrosulfuric acid, metaphosphoric acid Or a salt with an organic acid such as citric acid, benzoic acid, acetic acid, propionic acid, fumaric acid, maleic acid, sulfonic acid (for example, methanesulfonic acid, p-toluenesulfonic acid, naphthalenesulfonic acid) Can be mentioned. Moreover, when it has a phenolic hydroxyl group or a carboxyl group, it can also be used as alkali metal salts, such as a sodium salt and potassium salt.

前記式(I)で示される化合物のうち、Rが水素原子である化合物は、例えば、前記式(I)においてXが水素原子である化合物(例えば、N−アセチル−5−メトキシトリプトファンメチルエステル)をハロゲン化することにより製造することができる。また、前記式(I)においてRが水酸基、Xが水素原子である化合物(例えば、N−アセチル−1−ヒドロキシ−5−メトキシトリプトファンメチルエステル)をハロゲン化することによっても、前記式(I)においてRが水酸基、Xがハロゲン原子である化合物を製造することができる。Among the compounds represented by the formula (I), a compound in which R 1 is a hydrogen atom is, for example, a compound in which X is a hydrogen atom in the formula (I) (for example, N-acetyl-5-methoxytryptophan methyl ester ) Can be produced by halogenation. Further, by halogenating a compound (for example, N-acetyl-1-hydroxy-5-methoxytryptophan methyl ester) in which R 1 is a hydroxyl group and X is a hydrogen atom in the formula (I), the formula (I ) In which R 1 is a hydroxyl group and X is a halogen atom.

前記式(I)で示される化合物のうち、Rが置換又は非置換のC1−6−アルキル基、置換又は非置換のC2−6−アルケニル基、置換又は非置換のC2−6−アルキニル基、置換又は非置換の芳香族基、置換又は非置換のアラルキル基、置換又は非置換のアシル基、置換又は非置換のアリールスルホニル基、又は置換又は非置換のC1−6−アルキルスルホニル基である化合物は、例えば、前記のようにして得られた前記式(I)においてRが水素原子、Xがハロゲン原子である化合物を、N,N−ジメチルホルムアミド等の有機溶媒中、塩基触媒の存在下、式:R−X(式中、Rは置換又は非置換のC1−6−アルキル基、置換又は非置換のC2−6−アルケニル基、置換又は非置換のC2−6−アルキニル基、置換又は非置換の芳香族基、置換又は非置換のアラルキル基、置換又は非置換のアシル基、置換又は非置換のアリールスルホニル基、又は置換又は非置換のC1−6−アルキルスルホニル基を表し、Xはハロゲン原子を表す。)で示される化合物と反応させることにより製造することができる。Among the compounds represented by the formula (I), R 1 is a substituted or unsubstituted C 1-6 -alkyl group, a substituted or unsubstituted C 2-6 -alkenyl group, a substituted or unsubstituted C 2-6. An alkynyl group, a substituted or unsubstituted aromatic group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted acyl group, a substituted or unsubstituted arylsulfonyl group, or a substituted or unsubstituted C 1-6 -alkyl The compound that is a sulfonyl group is, for example, a compound in which R 1 is a hydrogen atom and X is a halogen atom in the formula (I) obtained as described above in an organic solvent such as N, N-dimethylformamide. In the presence of a base catalyst, the formula: R 1 -X (wherein R 1 is a substituted or unsubstituted C 1-6 -alkyl group, a substituted or unsubstituted C 2-6 -alkenyl group, a substituted or unsubstituted group. A C2-6 -alkynyl group, Represents a substituted or unsubstituted aromatic group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted acyl group, a substituted or unsubstituted arylsulfonyl group, or a substituted or unsubstituted C 1-6 -alkylsulfonyl group; , X represents a halogen atom).

前記式(I)で示される化合物のうち、Rが置換又は非置換のC2−7−アルコキシカルボニル基である化合物は、例えば、前記式(I)においてRが水素原子、Xがハロゲン原子である化合物を、クロロホルム等の有機溶媒中、塩基触媒の存在下、式:(RO(式中、Rは置換又は非置換のC2−7−アルコキシカルボニル基を表す。)で示される化合物と反応させることにより製造することができる。Among the compounds represented by the formula (I), a compound in which R 1 is a substituted or unsubstituted C 2-7 -alkoxycarbonyl group includes, for example, R 1 is a hydrogen atom and X is a halogen in the formula (I) In the presence of a base catalyst in an organic solvent such as chloroform, the compound as an atom is represented by the formula: (R 1 ) 2 O (wherein R 1 represents a substituted or unsubstituted C 2-7 -alkoxycarbonyl group. It can manufacture by making it react with the compound shown by.

前記式(I)で示される化合物のうち、Rが水酸基である化合物は、例えば、前記式(I)においてR及びXが水素原子である化合物を、過酸化水素及びタングステン酸ナトリウムで処理した後、ハロゲン化することにより製造することができる。Among the compounds represented by the formula (I), a compound in which R 1 is a hydroxyl group is, for example, a treatment of the compound in which R 1 and X are hydrogen atoms in the formula (I) with hydrogen peroxide and sodium tungstate. Then, it can be produced by halogenation.

前記式(I)で示される化合物のうち、Rが水素原子である化合物は、例えば、前記式(I)においてX及びRが水素原子である化合物(例えば、R、R、R、Rが水素原子である化合物)をハロゲン化(例えば、酢酸、クロロホルム等を溶媒として、臭素又はN−ブロモコハク酸イミド等の臭素化剤で処理)することにより製造することができる。Among the compounds represented by the formula (I), a compound in which R 4 is a hydrogen atom is, for example, a compound in which X and R 4 are hydrogen atoms in the formula (I) (for example, R 1 , R 3 , R 5 , a compound in which R 6 is a hydrogen atom) can be produced by halogenation (for example, treatment with bromine or a brominating agent such as N-bromosuccinimide using acetic acid, chloroform or the like as a solvent).

前記式(I)で示される化合物は、塩基触媒の存在下、加水分解して、アシル基(−CO−R)を脱離させた後、酸無水物(R′CO−O−COR′)等で処理し、別のアシル基を導入することにより、アシル基を変換することができる。この際、中間体である脱アシル化体は、一般に空気中で酸化されやすいため、精製することなく、次のアシル化工程に用いることが好ましい。The compound represented by the formula (I) is hydrolyzed in the presence of a base catalyst to remove an acyl group (—CO—R 2 ), and then an acid anhydride (R 2 ′ CO—O—COR). The acyl group can be converted by treating with 2 ') or the like and introducing another acyl group. At this time, since the deacylated product as an intermediate is generally easily oxidized in the air, it is preferably used in the next acylation step without purification.

前記式(I)で示される化合物のうち、Rが水素原子である化合物は、例えば、Rがメチル基である化合物を、水酸化ナトリウム水溶液と加熱して加水分解することにより製造することができる。Among the compounds represented by the formula (I), a compound in which R 7 is a hydrogen atom is produced by, for example, hydrolyzing a compound in which R 7 is a methyl group by heating with an aqueous sodium hydroxide solution. Can do.

前記のようにして得られる生成物を精製するには、通常用いられる手法、例えばシリカゲル等を担体として用いたカラムクロマトグラフィーやメタノール、エタノール、クロロホルム、ジメチルスルホキシド、水等を用いた再結晶法によればよい。カラムクロマトグラフィーの溶出溶媒としては、メタノール、エタノール、クロロホルム、アセトン、ヘキサン、ジクロロメタン、酢酸エチル、及びこれらの混合溶媒等が挙げられる。   In order to purify the product obtained as described above, a commonly used technique such as column chromatography using silica gel or the like as a carrier or a recrystallization method using methanol, ethanol, chloroform, dimethyl sulfoxide, water or the like is used. You can do it. Examples of the column chromatography elution solvent include methanol, ethanol, chloroform, acetone, hexane, dichloromethane, ethyl acetate, and mixed solvents thereof.

前記式(I)で示される化合物及びその塩(以下「トリプトファン誘導体(I)」という。)は、骨芽細胞を活性化させる作用を有し、骨に関する種々の疾患、例えば骨粗鬆症の予防又は治療のための医薬組成物として、また、骨芽細胞活性化剤として、各種分野、例えば再生医療、歯科分野、魚類の生育、家畜の健康な生育による食肉生産、卵生産に有用である。また、ラジカルスキャベンジャー作用を有し、不眠症、生活習慣病の予防又は治療のための医薬組成物としても有用である。更に、本発明のトリプトファン誘導体は、前記以外の医薬として、例えば、血管拡張剤、降圧剤、アミノ酸補給剤、抗がん剤、血小板凝集抑制剤などとしての可能性も期待できる。   The compound represented by the formula (I) and a salt thereof (hereinafter referred to as “tryptophan derivative (I)”) have an action of activating osteoblasts, and prevent or treat various diseases related to bone such as osteoporosis. Is useful for various fields such as regenerative medicine, dentistry, fish growth, meat production by healthy growth of livestock, and egg production. It also has a radical scavenger action and is useful as a pharmaceutical composition for the prevention or treatment of insomnia and lifestyle-related diseases. Furthermore, the tryptophan derivative of the present invention can also be expected as a medicament other than the above, for example, as a vasodilator, an antihypertensive agent, an amino acid supplement, an anticancer agent, a platelet aggregation inhibitor, and the like.

本発明のトリプトファン誘導体を有効成分とする骨粗鬆症治療薬は、他の骨粗鬆症治療薬、例えばカルシウム製剤、ビタミンD系製剤、ホルモン系製剤、カルシトニン系製剤、ビスフォスホネート製剤、イプリフラボン製剤などと併用することができる。この場合には、必要に応じて、後述の投与量を適宜増減することができる。   The osteoporosis therapeutic agent containing the tryptophan derivative of the present invention as an active ingredient is used in combination with other osteoporosis therapeutic agents such as calcium preparations, vitamin D preparations, hormone preparations, calcitonin preparations, bisphosphonate preparations, ipriflavone preparations and the like. be able to. In this case, the dose described later can be increased or decreased as necessary.

以下、トリプトファン誘導体(I)の投与量及び製剤化について説明する。   Hereinafter, the dose and formulation of the tryptophan derivative (I) will be described.

トリプトファン誘導体(I)はそのまま、あるいは慣用の製剤担体と共に動物及びヒトに投与することができる。投与形態としては、特に限定がなく、必要に応じ適宜選択して使用され、錠剤、カプセル剤、顆粒剤、細粒剤、散剤、徐放性製剤、懸濁液、エマルジョン剤、シロップ剤、エリキシル剤等の経口剤、注射剤、坐剤、塗布剤、貼付剤等の非経口剤が挙げられる。   Tryptophan derivative (I) can be administered to animals and humans as it is or together with conventional pharmaceutical carriers. The dosage form is not particularly limited, and is appropriately selected and used as necessary. Tablets, capsules, granules, fine granules, powders, sustained-release preparations, suspensions, emulsions, syrups, elixirs And oral preparations such as pills, and parenteral preparations such as injections, suppositories, coatings, and patches.

経口剤は、例えばデンプン、乳糖、白糖、マンニット、カルボキシメチルセルロース、コーンスターチ、無機塩類等を用いて常法に従って製造される。   The oral preparation is produced according to a conventional method using, for example, starch, lactose, sucrose, mannitol, carboxymethylcellulose, corn starch, inorganic salts and the like.

この種の製剤には、適宜前記賦形剤の他に、結合剤、崩壊剤、界面活性剤、滑沢剤、流動性促進剤、矯味剤、着色剤、香料等を使用することができる。   In this type of preparation, a binder, a disintegrant, a surfactant, a lubricant, a fluidity promoter, a corrigent, a colorant, a fragrance and the like can be appropriately used in addition to the above-mentioned excipients.

結合剤としては、例えばデンプン、デキストリン、アラビアゴム末、ゼラチン、ヒドロキシプロピルスターチ、メチルセルロース、カルボキシメチルセルロースナトリウム、ヒドロキシプロピルセルロース、結晶セルロース、エチルセルロース、ポリビニルピロリドン、マクロゴールが挙げられる。   Examples of the binder include starch, dextrin, gum arabic powder, gelatin, hydroxypropyl starch, methylcellulose, sodium carboxymethylcellulose, hydroxypropylcellulose, crystalline cellulose, ethylcellulose, polyvinylpyrrolidone, and macrogol.

崩壊剤としては、例えばデンプン、ヒドロキシプロピルスターチ、カルボキシメチルセルロースナトリウム、カルボキシメチルセルロースカルシウム、カルボキシメチルセルロース、低置換ヒドロキシプロピルセルロースが挙げられる。   Examples of the disintegrant include starch, hydroxypropyl starch, carboxymethylcellulose sodium, carboxymethylcellulose calcium, carboxymethylcellulose, and low-substituted hydroxypropylcellulose.

界面活性剤としては、例えばラウリル硫酸ナトリウム、大豆レシチン、ショ糖脂肪酸エステル、ポリソルベート80が挙げられる。   Examples of the surfactant include sodium lauryl sulfate, soybean lecithin, sucrose fatty acid ester, and polysorbate 80.

滑沢剤としては、例えばタルク、ロウ類、水素添加植物油、ショ糖脂肪酸エステル、ステアリン酸マグネシウム、ステアリン酸カルシウム、ステアリン酸アルミニウム、ポリエチレングリコールが挙げられる。   Examples of the lubricant include talc, waxes, hydrogenated vegetable oil, sucrose fatty acid ester, magnesium stearate, calcium stearate, aluminum stearate, and polyethylene glycol.

流動性促進剤としては、例えば軽質無水ケイ酸、乾燥水酸化アルミニウムゲル、合成ケイ酸アルミニウム、ケイ酸マグネシウムが挙げられる。   Examples of the fluidity promoter include light anhydrous silicic acid, dry aluminum hydroxide gel, synthetic aluminum silicate, and magnesium silicate.

注射剤は常法に従って製造され、希釈剤として一般に注射用蒸留水、生理食塩水、ブドウ糖水溶液、オリーブ油、ゴマ油、ラッカセイ油、ダイズ油、トウモロコシ油、プロピレングリコール、ポリエチレングリコール等を用いることができる。更に必要に応じて、殺菌剤、防腐剤、安定剤を加えてもよい。また、注射剤は安定性の点から、バイアル等に充填後冷凍し、通常の凍結乾燥技術により水分を除去し、使用直前に凍結乾燥物から液剤を再調製することもできる。更に、必要に応じて適宜、等張化剤、安定剤、防腐剤、無痛化剤等を加えてもよい。   Injectables are produced according to conventional methods, and generally used as diluents are distilled water for injection, physiological saline, aqueous glucose solution, olive oil, sesame oil, peanut oil, soybean oil, corn oil, propylene glycol, polyethylene glycol and the like. Furthermore, you may add a disinfectant, antiseptic | preservative, and a stabilizer as needed. In addition, from the viewpoint of stability, the injection can be frozen after filling into a vial or the like, the water can be removed by a normal freeze-drying technique, and the liquid can be re-prepared from the freeze-dried product immediately before use. Furthermore, an isotonic agent, stabilizer, preservative, soothing agent and the like may be added as necessary.

その他の非経口剤としては、外用液剤、軟膏等の塗布剤、貼付剤、直腸内投与のための坐剤等が挙げられ、常法に従って製造される。   Examples of other parenteral preparations include coating solutions for external use, ointments and the like, patches, suppositories for rectal administration, and the like, which are produced according to a conventional method.

本発明の製剤は、剤形、投与経路等により異なるが、1日1〜数回から1〜数回/週〜月の投与が可能である。   The preparation of the present invention varies depending on the dosage form, administration route and the like, and can be administered from 1 to several times a day to 1 to several times per week to a month.

経口剤として所期の効果を発揮するためには、患者の年令、体重、疾患の程度により異なるが、通常成人でトリプトファン誘導体(I)の重量として1〜200mgを、1日数回に分けての服用が適当である。   In order to exert the desired effect as an oral preparation, the weight of tryptophan derivative (I) is usually 1 to 200 mg divided into several times a day in normal adults, although it depends on the age, body weight, and degree of disease of the patient. Is appropriate.

非経口剤として所期の効果を発揮するためには、患者の年令、体重、疾患の程度により異なるが、通常成人でトリプトファン誘導体(I)の重量として1日1〜50mgの静注、点滴静注、皮下注射、筋肉注射が適当である。   In order to exert the desired effect as a parenteral preparation, it varies depending on the patient's age, body weight, and degree of disease, but it is usually 1-50 mg / day intravenously or intravenously as the weight of tryptophan derivative (I) in adults. Intravenous injection, subcutaneous injection, and intramuscular injection are appropriate.

本明細書は、本願の優先権の基礎である特願2005−209753の明細書に記載された内容を包含する。   This specification includes the contents described in the specification of Japanese Patent Application No. 2005-209753 which is the basis of the priority of the present application.

以下、実施例をあげて本発明を更に具体的に説明するが、本発明の範囲はこれらに限定されるものではない。   Hereinafter, the present invention will be described more specifically with reference to examples. However, the scope of the present invention is not limited to these examples.

[実施例1]
(S)−(+)−N−アセチル−5−メトキシトリプトファンメチルエステル(1)から(S)−(+)−N−アセチル−2,6−ジブロモ−5−メトキシトリプトファンメチルエステル(2),(S)−(+)−N−アセチル−2,4,7−トリブロモ−5−メトキシトリプトファンメチルエステル(3),(S)−(+)−N−アセチル−2,4,6−トリブロモ−5−メトキシトリプトファンメチルエステル(4)の合成

Figure 0005070050
[Example 1]
(S)-(+)-N-acetyl-5-methoxytryptophan methyl ester (1) to (S)-(+)-N-acetyl-2,6-dibromo-5-methoxytryptophan methyl ester (2), (S)-(+)-N-acetyl-2,4,7-tribromo-5-methoxytryptophan methyl ester (3), (S)-(+)-N-acetyl-2,4,6-tribromo- Synthesis of 5-methoxytryptophan methyl ester (4)
Figure 0005070050

56.6mg(0.20mmol)の(S)−(+)−N−アセチル−5−メトキシトリプトファンメチルエステル(1)(M. Somei and Y. Fukui, Heterocycles, 36, 1859 (1993) に記載の方法に従い合成した。高価ではあるが、市販品もある。)を4.5mLの酢酸に溶解した溶液に、別途に458.0mgの臭素及び41.8mgの酢酸ナトリウムを5.0mLの酢酸に溶解して調製した臭素溶液を1.0mL(0.59mmol)加え、室温下30分間撹拌した。反応液に1.0mLの10%ハイポ水溶液を加えて、クロロホルム−メタノール(95:5,v/v)混合溶媒を加えた後、40%水酸化ナトリウム水溶液を加えて全体をアルカリ性にした。次いで、クロロホルム−メタノール(95:5,v/v)混合溶媒で抽出した。有機相を飽和食塩水で洗浄し、無水硫酸ナトリウムで乾燥後、溶媒を減圧留去して黄色固形物を得た。シリカゲルを担体とし、クロロホルム−メタノール(99.5:0.5,v/v)混合溶媒を溶出溶媒とするカラムクロマトグラフィーを行い、溶出順に28.4mgの分離困難な(S)−(+)−N−アセチル−2,6−ジブロモ−5−メトキシトリプトファンメチルエステル(2)及び(S)−(+)−N−アセチル−2,4,7−トリブロモ−5−メトキシトリプトファンメチルエステル(3)の混合物、次いで53.7mg(52%)の(S)−(+)−N−アセチル−2,4,6−トリブロモ−5−メトキシトリプトファンメチルエステル(4)を得た。56.6 mg (0.20 mmol) of (S)-(+)-N-acetyl-5-methoxytryptophan methyl ester (1) (described in M. Somei and Y. Fukui, Heterocycles, 36 , 1859 (1993) Was synthesized in accordance with the method. Although expensive, there are commercially available products) in a solution of 4.5 mL of acetic acid, and 458.0 mg of bromine and 41.8 mg of sodium acetate were separately dissolved in 5.0 mL of acetic acid. Then, 1.0 mL (0.59 mmol) of the prepared bromine solution was added, and the mixture was stirred at room temperature for 30 minutes. 1.0 mL of 10% hypo aqueous solution was added to the reaction solution, mixed solvent of chloroform-methanol (95: 5, v / v) was added, and then 40% aqueous sodium hydroxide solution was added to make the whole alkaline. Subsequently, it extracted with chloroform-methanol (95: 5, v / v) mixed solvent. The organic phase was washed with saturated brine, dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure to give a yellow solid. Column chromatography using silica gel as a carrier and chloroform-methanol (99.5: 0.5, v / v) mixed solvent as an elution solvent, 28.4 mg of (S)-(+) difficult to separate in the order of elution -N-acetyl-2,6-dibromo-5-methoxytryptophan methyl ester (2) and (S)-(+)-N-acetyl-2,4,7-tribromo-5-methoxytryptophan methyl ester (3) And then 53.7 mg (52%) of (S)-(+)-N-acetyl-2,4,6-tribromo-5-methoxytryptophan methyl ester (4).

[化合物(4)]
mp 198-199 ℃ (無色粒状晶、酢酸エチルエステルから再結晶).
IR (KBr): 3307, 1730, 1647, 1556, 1300, 1232, 1028 cm-1.
1H-NMR (CDCl3) δ: 1.88 (3H, s), 3.29 (1H, dd, J=9.8, 14.6 Hz), 3.58 (1H, dd, J=5.2, 14.6 Hz), 3.77 (3H, s), 3.88 (3H, s), 5.01 (1H, ddd, J=5.2, 8.6, 9.8 Hz, D2O添加によりdd, J=5.2, 9.8 Hzに変化), 6.17 (1H, br d, J=8.6 Hz, D2O添加により消失), 7.37 (1H, s), 8.70 (1H, br s, D2O添加により消失).
質量分析 m/z: 530 (M+), 528 (M+), 526 (M+), 524 (M+).
Anal. Calcd for: C15H15Br3N2O4: C, 34.19; H, 2.87; N, 5.32. Found: C, 34.24; H, 2.89; N, 5.18.
旋光度[α]D 26 +14.8°(DMSO, c=0.200). [α]D 27 +1.47°(MeOH, c=0.204).
[α]D 28 +4.4°(CHCl3, c=0.203).
[実施例2]
(S)−(+)−N−アセチル−2,4,6−トリブロモ−5−メトキシトリプトファンメチルエステル(4)から(S)−(+)−N−アセチル−2,4,6−トリブロモ−1−t−ブトキシカルボニル−5−メトキシトリプトファンメチルエステル(5)の合成

Figure 0005070050
[Compound (4)]
mp 198-199 ° C (colorless granular crystals, recrystallized from ethyl acetate).
IR (KBr): 3307, 1730, 1647, 1556, 1300, 1232, 1028 cm -1 .
1 H-NMR (CDCl 3 ) δ: 1.88 (3H, s), 3.29 (1H, dd, J = 9.8, 14.6 Hz), 3.58 (1H, dd, J = 5.2, 14.6 Hz), 3.77 (3H, s ), 3.88 (3H, s), 5.01 (1H, ddd, J = 5.2, 8.6, 9.8 Hz, change to dd, J = 5.2, 9.8 Hz by adding D 2 O), 6.17 (1H, br d, J = 8.6 Hz, disappeared by adding D 2 O), 7.37 (1H, s), 8.70 (disappeared by adding 1H, br s, D 2 O).
Mass spectrometry m / z: 530 (M + ), 528 (M + ), 526 (M + ), 524 (M + ).
Anal.Calcd for: C 15 H 15 Br 3 N 2 O 4 : C, 34.19; H, 2.87; N, 5.32. Found: C, 34.24; H, 2.89; N, 5.18.
Optical rotation [α] D 26 + 14.8 ° (DMSO, c = 0.200). [Α] D 27 + 1.47 ° (MeOH, c = 0.204).
[Α] D 28 + 4.4 ° (CHCl 3 , c = 0.203).
[Example 2]
(S)-(+)-N-acetyl-2,4,6-tribromo-5-methoxytryptophan methyl ester (4) to (S)-(+)-N-acetyl-2,4,6-tribromo- Synthesis of 1-t-butoxycarbonyl-5-methoxytryptophan methyl ester (5)
Figure 0005070050

49.3mg(0.09mmol)の(S)−(+)−N−アセチル−2,4,6−トリブロモ−5−メトキシトリプトファンメチルエステル(4)をクロロホルム10.0mLに溶解した溶液に、3.4mg(0.03mmol)のジメチルアミノピリジン及び30.6mg(0.14mmol)のジt−ブチルジカルボナートを1.0mLのクロロホルムに溶かした溶液を加えて室温下30分間攪拌した。反応液を減圧下に留去し、黄色油状物を得た。シリカゲルを担体とし、クロロホルム−メタノール(99:1,v/v)混合溶媒を溶出溶媒とするカラムクロマトグラフィーで精製すると57.5mg(98%)の収率で目的物(5)が得られた。   To a solution of 49.3 mg (0.09 mmol) of (S)-(+)-N-acetyl-2,4,6-tribromo-5-methoxytryptophan methyl ester (4) in 10.0 mL of chloroform, 3 A solution prepared by dissolving 0.4 mg (0.03 mmol) of dimethylaminopyridine and 30.6 mg (0.14 mmol) of di-t-butyl dicarbonate in 1.0 mL of chloroform was added and stirred at room temperature for 30 minutes. The reaction solution was distilled off under reduced pressure to obtain a yellow oil. Purification by column chromatography using silica gel as a carrier and chloroform-methanol (99: 1, v / v) mixed solvent as an elution solvent gave the target product (5) in a yield of 57.5 mg (98%). .

mp 126-128 ℃(無色針状晶、クロロホルム−ヘキサンから再結晶).
IR (KBr): 3435, 1759, 1732, 1651, 1396, 1275, 1159, 1111cm-1.
1H-NMR (CDCl3) δ: 1.69 (9H, s), 1.89 (3H, s), 3.38 (1H, dd, J=10.1, 14.3 Hz), 3.65 (1H, dd, J=5.2, 14.3 Hz), 3.75 (3H, s), 3.90 (3H, s), 5.07 (1H, ddd, J=5.2, 8.5, 10.1 Hz, D2O添加によりdd, J=5.2, 10.1 Hz,に変化), 6.14 (1H, br d, J=8.5 Hz, D2O添加により消失), 8.39 (1H, s).
質量分析 m/z: 630 (M+), 628 (M+), 626 (M+), 624 (M+).
Anal. Calcd for: C20H23Br3N2O6: C, 38.30; H, 3.70; N, 4.47. Found: C, 38.18; H, 3.74; N, 4.45.
旋光度[α]D 24 +3.3°(CHCl3, c=0.200).
[実施例3]
(S)−(+)−N−アセチル−2,4,6−トリブロモ−5−メトキシトリプトファンメチルエステル(4)から(S)−(+)−N−アセチル−1−アリル−2,4,6−トリブロモ−5−メトキシトリプトファンメチルエステル(6)の合成

Figure 0005070050
mp 126-128 ° C (colorless needles, recrystallized from chloroform-hexane).
IR (KBr): 3435, 1759, 1732, 1651, 1396, 1275, 1159, 1111cm -1 .
1 H-NMR (CDCl 3 ) δ: 1.69 (9H, s), 1.89 (3H, s), 3.38 (1H, dd, J = 10.1, 14.3 Hz), 3.65 (1H, dd, J = 5.2, 14.3 Hz ), 3.75 (3H, s), 3.90 (3H, s), 5.07 (1H, ddd, J = 5.2, 8.5, 10.1 Hz, change to dd, J = 5.2, 10.1 Hz by adding D 2 O), 6.14 (1H, br d, J = 8.5 Hz, disappeared by adding D 2 O), 8.39 (1H, s).
Mass spectrometry m / z: 630 (M + ), 628 (M + ), 626 (M + ), 624 (M + ).
Anal.Calcd for: C 20 H 23 Br 3 N 2 O 6 : C, 38.30; H, 3.70; N, 4.47. Found: C, 38.18; H, 3.74; N, 4.45.
Optical rotation [α] D 24 + 3.3 ° (CHCl 3 , c = 0.200).
[Example 3]
(S)-(+)-N-acetyl-2,4,6-tribromo-5-methoxytryptophan methyl ester (4) to (S)-(+)-N-acetyl-1-allyl-2,4 Synthesis of 6-tribromo-5-methoxytryptophan methyl ester (6)
Figure 0005070050

39.8mg(0.08mmol)の(S)−(+)−N−アセチル−2,4,6−トリブロモ−5−メトキシトリプトファンメチルエステル(4)を2.5mLのN,N−ジメチルホルムアミドに溶解した溶液に、36.5mg(0.26mmol)の炭酸カリウムを加え、次いで0.13mL(d=1.398,1.51mmol)のアリルブロミドを加えて、室温下30分間撹拌した。反応液に水を加えて、酢酸エチルエステル抽出した。有機相を飽和食塩水で洗浄し、無水硫酸ナトリウムで乾燥後、溶媒を減圧留去して黄色油状物を得た。シリカゲルを担体とし、クロロホルムを溶出溶媒とするカラムクロマトグラフィーで精製すると42.4mg(99%)の収率で目的物(6)が得られた。 39.8 mg (0.08 mmol) of (S)-(+)-N-acetyl-2,4,6-tribromo-5-methoxytryptophan methyl ester (4) was added to 2.5 mL of N, N-dimethylformamide. To the dissolved solution, 36.5 mg (0.26 mmol) of potassium carbonate was added, then 0.13 mL (d = 1.398, 1.51 mmol) of allyl bromide was added, and the mixture was stirred at room temperature for 30 minutes. Water was added to the reaction solution, followed by extraction with acetic acid ethyl ester. The organic phase was washed with saturated brine, dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure to give a yellow oil. Purification by column chromatography using silica gel as a carrier and chloroform as an elution solvent gave the target product (6) in a yield of 42.4 mg (99%).

mp 191-192 ℃ (無色針状晶、酢酸エチルエステルから再結晶).
IR (KBr): 3303, 1732, 1645, 1547, 1228, 1016 cm-1.
1H-NMR (CDCl3) δ: 1.86 (3H, s), 3.34 (1H, dd, J=9.8, 14.7 Hz), 3.62 (1H, dd, J=5.4, 14.7 Hz), 3.74 (3H, s), 3.89 (3H, s), 4.75 (2H, m), 4.83 (1H, d, J=17.1 Hz), 5.01 (1H, ddd, J=5.4, 8.7, 9.8 Hz, D2O添加によりdd, J=5.4, 9.8 Hz,に変化), 5.19 (1H, d, J=10.3 Hz), 5.86 (1H, tdd, J=4.8, 10.3, 17.1 Hz), 6.12 (1H, br d, J=8.7 Hz, D2O添加により消失), 7.41 (1H, s).
質量分析 m/z: 570 (M+) , 568 (M+), 566 (M+), 564 (M+).
Anal. Calcd for: C18H19Br3N2O4: C, 38.12; H, 3.38; N, 4.94. Found: C, 37.97; H, 3.43; N, 4.86.
旋光度[α]D 26 +13.8°(CHCl3, c=0.203).
[実施例4]
(S)−(+)−N−アセチル−2,4,6−トリブロモ−5−メトキシトリプトファンメチルエステル(4)から(S)−(+)−N−アセチル−2,4,6−トリブロモ−5−メトキシ−1−プロパルギルトリプトファンメチルエステル(7)の合成

Figure 0005070050
mp 191-192 ° C (colorless needles, recrystallized from ethyl acetate).
IR (KBr): 3303, 1732, 1645, 1547, 1228, 1016 cm -1 .
1 H-NMR (CDCl 3 ) δ: 1.86 (3H, s), 3.34 (1H, dd, J = 9.8, 14.7 Hz), 3.62 (1H, dd, J = 5.4, 14.7 Hz), 3.74 (3H, s ), 3.89 (3H, s), 4.75 (2H, m), 4.83 (1H, d, J = 17.1 Hz), 5.01 (1H, ddd, J = 5.4, 8.7, 9.8 Hz, dd with addition of D 2 O, J = 5.4, 9.8 Hz), 5.19 (1H, d, J = 10.3 Hz), 5.86 (1H, tdd, J = 4.8, 10.3, 17.1 Hz), 6.12 (1H, br d, J = 8.7 Hz , Disappeared by addition of D 2 O), 7.41 (1H, s).
Mass spectrometry m / z: 570 (M + ), 568 (M + ), 566 (M + ), 564 (M + ).
Anal. Calcd for: C 18 H 19 Br 3 N 2 O 4 : C, 38.12; H, 3.38; N, 4.94. Found: C, 37.97; H, 3.43; N, 4.86.
Optical rotation [α] D 26 + 13.8 ° (CHCl 3 , c = 0.203).
[Example 4]
(S)-(+)-N-acetyl-2,4,6-tribromo-5-methoxytryptophan methyl ester (4) to (S)-(+)-N-acetyl-2,4,6-tribromo- Synthesis of 5-methoxy-1-propargyltryptophan methyl ester (7)
Figure 0005070050

23.6mg(0.04mmol)の(S)−(+)−N−アセチル−2,4,6−トリブロモ−5−メトキシトリプトファンメチルエステル(4)を2.0mLのN,N−ジメチルホルムアミドに溶解した溶液に、21.6mg(0.16mmol)の炭酸カリウムを加え、次いで0.08mL(d=1.335,0.9mmol)のプロパルギルブロミドを加えて、室温下30分間撹拌した。反応液に水を加えて、酢酸エチルエステル抽出した。有機相を飽和食塩水で洗浄し、無水硫酸ナトリウムで乾燥後、溶媒を減圧留去してピンク色油状物を得た。シリカゲルを担体とし、クロロホルムを溶出溶媒とするカラムクロマトグラフィーで精製すると23.9mg(94%)の収率で目的物(7)が得られた。 23.6 mg (0.04 mmol) of (S)-(+)-N-acetyl-2,4,6-tribromo-5-methoxytryptophan methyl ester (4) in 2.0 mL of N, N-dimethylformamide To the dissolved solution, 21.6 mg (0.16 mmol) of potassium carbonate was added, then 0.08 mL (d = 1.335, 0.9 mmol) of propargyl bromide was added, and the mixture was stirred at room temperature for 30 minutes. Water was added to the reaction solution, followed by extraction with acetic acid ethyl ester. The organic phase was washed with saturated brine, dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure to give a pink oil. Purification by column chromatography using silica gel as a carrier and chloroform as an elution solvent gave the target product (7) in a yield of 23.9 mg (94%).

mp 284-285 ℃ (分解点、封管測定、無色針状晶、クロロホルム−メタノールから再結晶).
IR (KBr): 3284, 3224, 2114, 1724, 1647, 1552, 1230, 1016 cm-1.
1H-NMR (DMSO-d6) δ: 1.82 (3H, s), 3.28 (1H, dd, J=7.1, 14.9 Hz), 3.33 (1H, dd, J=8.7, 14.9 Hz), 3.33 (1H, t, J=2.4 Hz), 3.48 (3H, s), 3.80 (3H, s), 4.47 (1H, ddd, J=7.1, 7.1, 8.7 Hz, D2O添加によりdd, J=7.1, 8.7 Hzに変化), 5.13 (2H, dt, J=2.4, 4.2 Hz), 8.02 (1H, s), 8.44 (1H, br d, J=7.1 Hz, D2O添加により消失).
質量分析 m/z: 568 (M+), 566 (M+), 564 (M+), 562 (M+).
Anal. Calcd for: C18H17Br3N2O4: C, 38.26; H, 3.03; N, 4.96. Found: C, 38.11; H, 3.12; N, 4.83.
旋光度[α]D 24 +7.7°(DMSO, c=0.202).
[実施例5]
(S)−(+)−N−アセチル−2,4,6−トリブロモ−5−メトキシトリプトファンメチルエステル(4)から(S)−(+)−N−アセチル−1−ベンジル−2,4,6−トリブロモ−5−メトキシトリプトファンメチルエステル(8)の合成

Figure 0005070050
mp 284-285 ° C (decomposition point, sealed tube measurement, colorless needles, recrystallized from chloroform-methanol).
IR (KBr): 3284, 3224, 2114, 1724, 1647, 1552, 1230, 1016 cm -1 .
1 H-NMR (DMSO-d 6 ) δ: 1.82 (3H, s), 3.28 (1H, dd, J = 7.1, 14.9 Hz), 3.33 (1H, dd, J = 8.7, 14.9 Hz), 3.33 (1H , t, J = 2.4 Hz), 3.48 (3H, s), 3.80 (3H, s), 4.47 (1H, ddd, J = 7.1, 7.1, 8.7 Hz, dd, J = 7.1, 8.7 by adding D 2 O Hz)), 5.13 (2H, dt, J = 2.4, 4.2 Hz), 8.02 (1H, s), 8.44 (1H, br d, J = 7.1 Hz, disappeared by adding D 2 O).
Mass spectrometry m / z: 568 (M + ), 566 (M + ), 564 (M + ), 562 (M + ).
Anal. Calcd for: C 18 H 17 Br 3 N 2 O 4 : C, 38.26; H, 3.03; N, 4.96. Found: C, 38.11; H, 3.12; N, 4.83.
Optical rotation [α] D 24 + 7.7 ° (DMSO, c = 0.202).
[Example 5]
(S)-(+)-N-acetyl-2,4,6-tribromo-5-methoxytryptophan methyl ester (4) to (S)-(+)-N-acetyl-1-benzyl-2,4 Synthesis of 6-tribromo-5-methoxytryptophan methyl ester (8)
Figure 0005070050

19.6mg(0.04mmol)の(S)−(+)−N−アセチル−2,4,6−トリブロモ−5−メトキシトリプトファンメチルエステル(4)を1.5mLのN,N−ジメチルホルムアミドに溶解した溶液に、18.0mg(0.13mmol)の炭酸カリウムを加え、次いで0.09mL(d=1.44,0.7mmol)のベンジルブロミドを加えて、室温下30分間撹拌した。反応液に水を加えて、酢酸エチルエステル−メタノール(95:5,v/v)混合溶媒で抽出した。有機相を飽和食塩水で洗浄し、無水硫酸ナトリウムで乾燥後、溶媒を減圧留去して黄色油状物を得た。シリカゲルを担体とし、クロロホルム−メタノール(99:1,v/v)混合溶媒を展開溶媒とする薄層クロマトグラフィーを行い、Rf値0.18〜0.29の帯をクロロホルム−メタノール(95:5,v/v)混合溶媒で抽出すると、22.0mg(96%)の収率で目的物(8)が得られた。   19.6 mg (0.04 mmol) of (S)-(+)-N-acetyl-2,4,6-tribromo-5-methoxytryptophan methyl ester (4) was added to 1.5 mL of N, N-dimethylformamide. 18.0 mg (0.13 mmol) of potassium carbonate was added to the dissolved solution, then 0.09 mL (d = 1.44, 0.7 mmol) of benzyl bromide was added, and the mixture was stirred at room temperature for 30 minutes. Water was added to the reaction mixture, and the mixture was extracted with a mixed solvent of ethyl acetate-methanol (95: 5, v / v). The organic phase was washed with saturated brine, dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure to give a yellow oil. Thin layer chromatography using silica gel as a carrier and a chloroform-methanol (99: 1, v / v) mixed solvent as a developing solvent was performed, and a band with an Rf value of 0.18 to 0.29 was chloroform-methanol (95: 5 , V / v) Extraction with a mixed solvent gave the target product (8) in a yield of 22.0 mg (96%).

mp 226-227 ℃ (無色針状晶、メタノールから再結晶).
IR (KBr): 3298, 1732, 1643, 1550, 1414, 1230, 1018 cm-1.
1H-NMR (DMSO-d6) δ: 1.80 (3H, s), 3.28 (1H, dd, J=7.1, 14.4 Hz), 3.40 (1H, dd, J=8.5, 14.7 Hz, D2O添加により現れた。), 3.47 (3H, s), 3.79 (3H, s), 4.55 (1H, ddd, J=7.1, 7.1, 8.5 Hz, D2O添加によりdd, J=7.1, 8.5 Hzに変化), 5.53 (2H, s), 6.96 (2H, d, J=7.1 Hz), 7.25 (1H, t, J=7.1 Hz), 7.31 (2H, t, J=7.1 Hz), 7.90 (1H, s) 8.45 (1H, d, J=7.1 Hz, D2O添加により消失).
質量分析 m/z: 620 (M+), 618 (M+), 616 (M+), 614 (M+).
Anal. Calcd for: C22H21Br3N2O4: C, 42.82; H, 3.43; N, 4.54. Found: C, 42.69; H, 3.47; N, 4.56.
旋光度[α]D 24 +8.3°(CHCl3, c=0.204).
[実施例6]
(S)−(+)−N−アセチル−2,6−ジブロモ−5−メトキシトリプトファンメチルエステル(2),(S)−(+)−N−アセチル−2,4,7−トリブロモ−5−メトキシトリプトファンメチルエステル(3)の混合物から(S)−(+)−N−アセチル−2,6−ジブロモ−1−t−ブトキシカルボニル−5−メトキシトリプトファンメチルエステル(9)の合成と化合物(3)の分離

Figure 0005070050
mp 226-227 ° C (colorless needles, recrystallized from methanol).
IR (KBr): 3298, 1732, 1643, 1550, 1414, 1230, 1018 cm -1 .
1 H-NMR (DMSO-d 6 ) δ: 1.80 (3H, s), 3.28 (1H, dd, J = 7.1, 14.4 Hz), 3.40 (1H, dd, J = 8.5, 14.7 Hz, D 2 O added ), 3.47 (3H, s), 3.79 (3H, s), 4.55 (1H, ddd, J = 7.1, 7.1, 8.5 Hz, change to dd, J = 7.1, 8.5 Hz by adding D 2 O ), 5.53 (2H, s), 6.96 (2H, d, J = 7.1 Hz), 7.25 (1H, t, J = 7.1 Hz), 7.31 (2H, t, J = 7.1 Hz), 7.90 (1H, s ) 8.45 (1H, d, J = 7.1 Hz, disappeared by adding D 2 O).
Mass spectrometry m / z: 620 (M + ), 618 (M + ), 616 (M + ), 614 (M + ).
Anal. Calcd for: C 22 H 21 Br 3 N 2 O 4 : C, 42.82; H, 3.43; N, 4.54. Found: C, 42.69; H, 3.47; N, 4.56.
Optical rotation [α] D 24 + 8.3 ° (CHCl 3 , c = 0.204).
[Example 6]
(S)-(+)-N-acetyl-2,6-dibromo-5-methoxytryptophan methyl ester (2), (S)-(+)-N-acetyl-2,4,7-tribromo-5- Synthesis of (S)-(+)-N-acetyl-2,6-dibromo-1-t-butoxycarbonyl-5-methoxytryptophan methyl ester (9) from a mixture of methoxytryptophan methyl ester (3) and compound (3 ) Separation
Figure 0005070050

93.3mgの分離困難な化合物(2),(3)(NMRから1:2の存在比)の混合物を10.0mLのクロロホルムに溶解した溶液に、9.6mg(0.08mmol,混合物の全てがトリブロモ体と考えて0.5当量)のジメチルアミノピリジン及び68.9mg(0.31mmol,混合物の全てがトリブロモ体と考えて2.0当量)のジt−ブチルジカルボナートを1.0mLのクロロホルムに溶かした溶液を加え、室温下10時間攪拌した。反応液を減圧下に留去して黄色油状物を得た。シリカゲルを担体とし、クロロホルム−メタノール(99:1,v/v)混合溶媒を溶出溶媒とするシリカゲルカラムクロマトグラフィーを行い、溶出順に39.0mgの化合物(9)及び62.0mgの化合物(3)を得た。 To a solution of 93.3 mg of the difficult-to-separate compounds (2) and (3) (1: 2 from NMR) in 10.0 mL of chloroform, 9.6 mg (0.08 mmol, all of the mixture) 1.0 mL of dimethylaminopyridine and 68.9 mg (0.31 mmol, 2.0 equivalents assuming that all of the mixture is considered to be a tribromo compound) of di-t-butyl dicarbonate Was dissolved in chloroform and stirred at room temperature for 10 hours. The reaction solution was distilled off under reduced pressure to obtain a yellow oily substance. Silica gel column chromatography was performed using silica gel as a carrier and chloroform-methanol (99: 1, v / v) mixed solvent as an elution solvent. Got.

[化合物(3)]
mp 218-220 ℃ (無色プリズム晶、クロロホルム−ヘキサンから再結晶).
IR (KBr): 3435, 3303, 1728, 1653, 1552 cm-1.
1H-NMR (CDCl3) δ: 1.87 (3H, s), 3.31 (1H, dd, J=10.0, 14.6 Hz), 3.58 (1H, dd, J=5.1, 14.6 Hz), 3.75 (3H, s), 3.91 (3H, s), 5.00 (1H, ddd, J=5.1, 8.5, 10.0 Hz, D2O添加によりdd, J=5.1, 10.0 Hzに変化), 6.12 (1H, br d, J=8.5 Hz, D2O添加により消失), 7.05 (1H, s), 8.31 (1H, br s, D2O添加により消失).
質量分析m/z: 530 (M+), 528 (M+), 526 (M+), 524 (M+).
Anal. Calcd for: C15H15Br3N2O4: C, 34.19; H, 2.87; N, 5.32. Found: C, 34.00; H, 2.91; N, 5.22.
旋光度[α]D 24 +5.1°(CHCl3, c=0.207).
[化合物(9)]
無色オイル.
IR (film): 3286, 2981, 1743, 1735, 1654 cm-1.
1H-NMR (CDCl3) δ: 1.70 (9H, s), 1.99 (3H, s), 3.21 (1H, dd, J=7.6, 15.0 Hz), 3.24 (1H, dd, J=5.7, 15.0 Hz), 3.69 (3H, s), 3.97 (3H, s), 4.85 (1H, dt, J=5.7, 7.6 Hz, D2O添加によりdd, J=5.7, 7.6 Hzに変化), 6.15 (1H, br d, J=7.6 Hz, D2O添加により消失), 7.17 (1H, s), 8.32 (1H, s).
高分解能質量分析m/z: Calcd for C20H24Br2N2O6: 549.9960 (M+), 547.9981 (M+), 546.0011 (M+). Found: 549.9932, 547.9963, 546.0003.
旋光度[α]D 24 +12.9°(CHCl3, c=0.210).
[実施例7]
(S)−(+)−N−アセチル−2,6−ジブロモ−1−t−ブトキシカルボニル−5−メトキシトリプトファンメチルエステル(9)から(S)−(+)−N−アセチル−2,6−ジブロモ−5−メトキシトリプトファンメチルエステル(2)の合成

Figure 0005070050
[Compound (3)]
mp 218-220 ° C (colorless prisms, recrystallized from chloroform-hexane).
IR (KBr): 3435, 3303, 1728, 1653, 1552 cm -1 .
1 H-NMR (CDCl 3 ) δ: 1.87 (3H, s), 3.31 (1H, dd, J = 10.0, 14.6 Hz), 3.58 (1H, dd, J = 5.1, 14.6 Hz), 3.75 (3H, s ), 3.91 (3H, s), 5.00 (1H, ddd, J = 5.1, 8.5, 10.0 Hz, change to dd, J = 5.1, 10.0 Hz by adding D 2 O), 6.12 (1H, br d, J = 8.5 Hz, disappeared by addition of D 2 O), 7.05 (1H, s), 8.31 (disappeared by addition of 1H, br s, D 2 O).
Mass spectrometry m / z: 530 (M +), 528 (M +), 526 (M +), 524 (M +).
Anal.Calcd for: C 15 H 15 Br 3 N 2 O 4 : C, 34.19; H, 2.87; N, 5.32. Found: C, 34.00; H, 2.91; N, 5.22.
Optical rotation [α] D 24 + 5.1 ° (CHCl 3 , c = 0.207).
[Compound (9)]
Colorless oil.
IR (film): 3286, 2981, 1743, 1735, 1654 cm -1 .
1 H-NMR (CDCl 3 ) δ: 1.70 (9H, s), 1.99 (3H, s), 3.21 (1H, dd, J = 7.6, 15.0 Hz), 3.24 (1H, dd, J = 5.7, 15.0 Hz ), 3.69 (3H, s), 3.97 (3H, s), 4.85 (1H, dt, J = 5.7, 7.6 Hz, change to dd, J = 5.7, 7.6 Hz by adding D 2 O), 6.15 (1H, br d, J = 7.6 Hz, disappeared by adding D 2 O), 7.17 (1H, s), 8.32 (1H, s).
High resolution mass spectrometry m / z: Calcd for C 20 H 24 Br 2 N 2 O 6 : 549.9960 (M + ), 547.9981 (M + ), 546.0011 (M + ). Found: 549.9932, 547.9963, 546.0003.
Optical rotation [α] D 24 + 12.9 ° (CHCl 3 , c = 0.210).
[Example 7]
(S)-(+)-N-acetyl-2,6-dibromo-1-t-butoxycarbonyl-5-methoxytryptophan methyl ester (9) to (S)-(+)-N-acetyl-2,6 -Synthesis of dibromo-5-methoxytryptophan methyl ester (2)
Figure 0005070050

18.3mg(0.03mmol)の(S)−(+)−N−アセチル−2,6−ジブロモ−1−t−ブトキシカルボニル−5−メトキシトリプトファンメチルエステル(9)を3.2mLのクロロホルムに溶解した溶液に、10%溶液になるように0.8mLのトリフルオロ酢酸を氷冷下で加えた。更に室温下12時間攪拌した。反応液にクロロホルムを加え、有機相を飽和重曹水で洗浄した。更に飽和食塩水で洗浄し、無水硫酸ナトリウムで乾燥後、溶媒を減圧留去して無色油状物を得た。シリカゲルを担体とし、クロロホルム−メタノール(99:1,v/v)混合溶媒を溶出溶媒とするカラムクロマトグラフィーを行い、10.3mg(70%)の化合物(2)を得た。 18.3 mg (0.03 mmol) of (S)-(+)-N-acetyl-2,6-dibromo-1-t-butoxycarbonyl-5-methoxytryptophan methyl ester (9) was added to 3.2 mL of chloroform. To the dissolved solution, 0.8 mL of trifluoroacetic acid was added under ice cooling so that a 10% solution was obtained. The mixture was further stirred at room temperature for 12 hours. Chloroform was added to the reaction solution, and the organic phase was washed with saturated aqueous sodium hydrogen carbonate. The extract was further washed with saturated brine, dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure to give a colorless oil. Column chromatography was performed using silica gel as a carrier and a chloroform-methanol (99: 1, v / v) mixed solvent as an elution solvent to obtain 10.3 mg (70%) of compound (2).

mp 174-175 ℃ (無色プリズム晶、メタノール−水から再結晶).
IR (KBr): 3363, 1745, 1716, 1660, 1647 cm-1. IR (CHCl3): 1739, 1674 cm-1.
1H-NMR (CDCl3) δ: 1.98 (3H, s), 3.21 (1H, dd, J=4.6, 14.0 Hz), 3.24 (1H, dd, J=4.6, 14.0 Hz), 3.70 (3H, s), 3.93 (3H, s), 4.90 (1H, dt, J=7.6, 4.6 Hz, D2O添加によりt, J=4.6 Hzに変化), 6.05 (1H, br d, J=7.6 Hz, D2O添加により消失), 7.07 (1H, s), 7.48 (1H, s), 8.01 (1H, br, D2O添加により消失).
質量分析 m/z: 450 (M+), 448 (M+), 446 (M+).
Anal. Calcd for: C15H16Br2N2O4 : C, 40.20; H, 3.60; N, 6.25. Found: C, 40.27; H, 3.71; N, 6.17.
旋光度[α]D 27 +12.0°(MeOH, c=0.217).
[実施例8]トリプトファン誘導体の骨細胞に対する影響試験
N. Suzuki, and A. Hattori, J. Pineal Res., 33, 253-258 (2002) に記載の方法に従って、トリプトファン誘導体の骨細胞に対する影響について試験した。
mp 174-175 ° C (colorless prisms, recrystallized from methanol-water).
IR (KBr): 3363, 1745, 1716, 1660, 1647 cm -1 .IR (CHCl 3 ): 1739, 1674 cm -1 .
1 H-NMR (CDCl 3 ) δ: 1.98 (3H, s), 3.21 (1H, dd, J = 4.6, 14.0 Hz), 3.24 (1H, dd, J = 4.6, 14.0 Hz), 3.70 (3H, s ), 3.93 (3H, s), 4.90 (1H, dt, J = 7.6, 4.6 Hz, changed to t, J = 4.6 Hz by adding D 2 O), 6.05 (1H, br d, J = 7.6 Hz, D Disappeared with 2 O addition), 7.07 (1H, s), 7.48 (1H, s), 8.01 (disappeared with 1H, br, D 2 O addition).
Mass spectrometry m / z: 450 (M + ), 448 (M + ), 446 (M + ).
Anal. Calcd for: C 15 H 16 Br 2 N 2 O 4 : C, 40.20; H, 3.60; N, 6.25. Found: C, 40.27; H, 3.71; N, 6.17.
Optical rotation [α] D 27 + 12.0 ° (MeOH, c = 0.217).
[Example 8] Effect of tryptophan derivative on bone cells
The effects of tryptophan derivatives on bone cells were tested according to the method described in N. Suzuki, and A. Hattori, J. Pineal Res., 33 , 253-258 (2002).

キンギョのメス(体重30g前後)をMS222(3−アミノ安息香酸エチルエステルメタンスルホン酸塩(ethyl 3-aminobenzoate, methane sulfonic acid salt))(Aldrich)で麻酔し、ウロコを所要枚数剥離した。そのウロコを1%の抗生物質(ペニシリン−ストレプトマイシン混合物)を含むイーグルスの最少培地(大日本製薬)で2度洗浄した。同様の培地を24穴のプレートにそれぞれ1mlずつ入れ、前記ウロコを複数枚ずつ(通常8枚)それぞれ入れるとともに、各穴に10−6Mのトリプトファン誘導体をそれぞれ添加した。次いで、これらを25℃で6時間培養した。なお、トリプトファン誘導体無添加の群(コントロール)も作成し、骨細胞に対する作用を比較した。この時、破骨細胞用と骨芽細胞用の2群を設けた。即ち、コントロール、10−6Mのトリプトファン誘導体(それぞれ2穴)の合計4穴作成した。したがって、24穴のプレートでは6種類のトリプトファン誘導体を調べることができる。Goldfish females (weight around 30 g) were anesthetized with MS222 (ethyl 3-aminobenzoate, methane sulfonic acid salt) (Aldrich), and the required number of scales were peeled off. The scale was washed twice with Eagles' minimal medium (Dainippon Pharmaceutical) containing 1% antibiotic (penicillin-streptomycin mixture). 1 ml of the same medium was placed in a 24-well plate, and a plurality of the scales (usually 8) were placed, and 10 −6 M tryptophan derivative was added to each well. They were then incubated at 25 ° C. for 6 hours. In addition, a group (control) to which no tryptophan derivative was added was also prepared, and the action on bone cells was compared. At this time, two groups for osteoclasts and osteoblasts were provided. That is, a total of 4 holes of 10-10 M tryptophan derivatives (2 holes each) were prepared. Therefore, six types of tryptophan derivatives can be examined in a 24-well plate.

培養後、培地を取り除き、10%ホルマリンの入った0.05Mカコジル酸緩衝液(pH7.4)を加え、固定した。このウロコは、酵素活性の測定まで、0.05Mカコジル酸緩衝液中に4℃で保管した。   After the culture, the medium was removed, and 0.05 M cacodylate buffer solution (pH 7.4) containing 10% formalin was added and fixed. This scale was stored at 4 ° C. in 0.05 M cacodylate buffer until measurement of enzyme activity.

(1)破骨細胞の受ける影響:酒石酸抵抗性酸ホスファターゼ(TRAP)の活性測定
前記固定処理を施したウロコを取り出し、ウロコの重量を測定した。測定後、ウロコを96穴のマイクロプレートに入れ、それぞれの穴に20mM酒石酸及び10mMパラニトロフェノールリン酸(基質)の入った100mM酢酸緩衝液(pH5.3)を200μl加え、25℃で20分間反応させ、次いで3モル水酸化ナトリウム水溶液(50μl)を加えて反応を止めた。その後、反応終了液100μlを別のマイクロプレートに移し、TRAPにより生じたパラニトロフェノール(p−NP)の量を分光光度計(405nm)により測定した。破骨細胞の活性は、ウロコ1g当り、1分間にパラニトロフェノールリン酸を分解し、p−NPを産生させた量として表示した。
(1) Effects of osteoclasts: Activity measurement of tartrate-resistant acid phosphatase (TRAP) The scales subjected to the fixing treatment were taken out, and the weight of the scales was measured. After the measurement, the scale is placed in a 96-well microplate, and 200 μl of 100 mM acetate buffer (pH 5.3) containing 20 mM tartaric acid and 10 mM paranitrophenol phosphate (substrate) is added to each well, and the mixture is incubated at 25 ° C. for 20 minutes. The reaction was then stopped by adding a 3 molar aqueous sodium hydroxide solution (50 μl). Thereafter, 100 μl of the reaction completion solution was transferred to another microplate, and the amount of paranitrophenol (p-NP) produced by TRAP was measured with a spectrophotometer (405 nm). Osteoclast activity was expressed as the amount of p-NP produced by degrading paranitrophenol phosphate per gram of scale per minute.

結果を表1に示す。

Figure 0005070050
The results are shown in Table 1.
Figure 0005070050

(2)骨芽細胞の受ける影響:アルカリホスファターゼ(ALP)活性測定
前記固定処理を施したウロコを取り出し、ウロコの重量を測定した。測定後、ウロコを96穴のマイクロプレートに入れ、それぞれの穴に10mMパラニトロフェノールリン酸(基質)、1mM塩化マグネシウム及び0.1mM塩化亜鉛の入った100mMトリス−塩酸緩衝液(pH9.5)を200μl加えて25℃で15分間反応させ、3モル水酸化ナトリウム水溶液(50μl)を加えて反応を止めた。その後、反応終了液100μlを別のマイクロプレートに移し、ALPにより生じたp−NPの量を分光光度計(405nm)により測定し、活性を求めた。
(2) Effect of osteoblasts: measurement of alkaline phosphatase (ALP) activity The scales subjected to the fixing treatment were taken out and the scale weights were measured. After the measurement, the scale is placed in a 96-well microplate, and 100 mM Tris-HCl buffer (pH 9.5) containing 10 mM paranitrophenol phosphate (substrate), 1 mM magnesium chloride and 0.1 mM zinc chloride in each hole. 200 μl was added and reacted at 25 ° C. for 15 minutes, and a 3 molar aqueous sodium hydroxide solution (50 μl) was added to stop the reaction. Thereafter, 100 μl of the reaction completed solution was transferred to another microplate, and the amount of p-NP produced by ALP was measured with a spectrophotometer (405 nm) to determine the activity.

結果を表2に示す。

Figure 0005070050
The results are shown in Table 2.
Figure 0005070050

表1及び表2から、メラトニンが破骨細胞及び骨芽細胞の両者に対して抑制的に作用するのに対し、本発明のトリプトファン誘導体は骨芽細胞を活性化する作用を有することがわかる。この結果から、本発明のトリプトファン誘導体は優れた骨粗鬆症治療薬となりうることが示された。 From Tables 1 and 2, it can be seen that melatonin acts suppressively on both osteoclasts and osteoblasts, whereas the tryptophan derivative of the present invention has an action of activating osteoblasts. From these results, it was shown that the tryptophan derivative of the present invention can be an excellent therapeutic agent for osteoporosis.

本明細書中で引用した全ての刊行物、特許及び特許出願をそのまま参考として本明細書中にとり入れるものとする。   All publications, patents and patent applications cited herein are incorporated herein by reference in their entirety.

本発明は骨粗鬆症治療薬、骨芽細胞活性化剤等の医薬の分野で利用される。   The present invention is used in the field of pharmaceuticals such as osteoporosis therapeutic agents and osteoblast activators.

Claims (5)

次式(I):
Figure 0005070050
(式中、Xはハロゲン原子を表し;Rは水素原子、置換又は非置換のC1−6−アルキル基、置換又は非置換のC2−6−アルケニル基、置換又は非置換のC2−6−アルキニル基、置換又は非置換の芳香族基、置換又は非置換のアラルキル基、置換又は非置換のアシル基、置換又は非置換のアリールスルホニル基、置換又は非置換のC1−6−アルキルスルホニル基、置換又は非置換のC2−7−アルコキシカルボニル基、又は水酸基を表し;Rは置換又は非置換のC1−21−アルキル基を表し;R、R及びRは、同一又は異なり、水素原子又はハロゲン原子を表し;Rは水素原子、又は置換又は非置換のC1−6−アルキル基を表し;Rは水素原子、又は、置換又は非置換のC1−21−炭化水素基を表す。但し、Xが臭素原子、R 、R 、R 、R 及びR が水素原子、R がトリフルオロメチル基、R が水素原子又はメチル基を表す化合物を除く。
で示される化合物又はその塩。
Formula (I):
Figure 0005070050
Wherein X represents a halogen atom; R 1 represents a hydrogen atom, a substituted or unsubstituted C 1-6 -alkyl group, a substituted or unsubstituted C 2-6 -alkenyl group, a substituted or unsubstituted C 2 -6 -Alkynyl group, substituted or unsubstituted aromatic group, substituted or unsubstituted aralkyl group, substituted or unsubstituted acyl group, substituted or unsubstituted arylsulfonyl group, substituted or unsubstituted C 1-6- Represents an alkylsulfonyl group, a substituted or unsubstituted C 2-7 -alkoxycarbonyl group, or a hydroxyl group; R 2 represents a substituted or unsubstituted C 1-21 -alkyl group; R 3 , R 5, and R 6 represent Are the same or different and each represents a hydrogen atom or a halogen atom; R 4 represents a hydrogen atom or a substituted or unsubstituted C 1-6 -alkyl group; R 7 represents a hydrogen atom or a substituted or unsubstituted C 1. -21 - a hydrocarbon group It is. Except where, X is a bromine atom, R 1, R 3, R 4, R 5 and R 6 is a hydrogen atom, R 2 is a trifluoromethyl group, a compound wherein R 7 represents a hydrogen atom or a methyl group.)
Or a salt thereof.
請求項1記載の式(I)において、Xが臭素原子、Rが水素原子、置換又は非置換のC1−6−アルキル基、置換又は非置換のC2−6−アルケニル基、置換又は非置換のC2−6−アルキニル基、置換又は非置換の芳香族基、置換又は非置換のアラルキル基、置換又は非置換のアシル基、置換又は非置換のアリールスルホニル基、置換又は非置換のC1−6−アルキルスルホニル基、又は置換又は非置換のC2−7−アルコキシカルボニル基、Rがメチル基、R、R及びRが、同一又は異なり、水素原子又は臭素原子、Rがメチル基、RがC1−6−アルキル基である化合物又はその塩。The formula (I) according to claim 1, wherein X is a bromine atom, R 1 is a hydrogen atom, a substituted or unsubstituted C 1-6 -alkyl group, a substituted or unsubstituted C 2-6 -alkenyl group, substituted or Unsubstituted C 2-6 -alkynyl group, substituted or unsubstituted aromatic group, substituted or unsubstituted aralkyl group, substituted or unsubstituted acyl group, substituted or unsubstituted arylsulfonyl group, substituted or unsubstituted A C 1-6 -alkylsulfonyl group, or a substituted or unsubstituted C 2-7 -alkoxycarbonyl group, R 2 is a methyl group, R 3 , R 5 and R 6 are the same or different, a hydrogen atom or a bromine atom, A compound or a salt thereof, wherein R 4 is a methyl group and R 7 is a C 1-6 -alkyl group. 請求項1又は2記載の化合物又はその薬学的に許容される塩を有効成分として含有する医薬組成物。  A pharmaceutical composition comprising the compound according to claim 1 or 2 or a pharmaceutically acceptable salt thereof as an active ingredient. 請求項1又は2記載の化合物又はその薬学的に許容される塩を有効成分として含有する骨粗鬆症治療薬。  A therapeutic agent for osteoporosis comprising the compound according to claim 1 or 2 or a pharmaceutically acceptable salt thereof as an active ingredient. 請求項1又は2記載の化合物又はその塩を含有する骨芽細胞活性化剤。  An osteoblast activator comprising the compound according to claim 1 or 2 or a salt thereof.
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